/* roulang page: index */
:root {
      --bg-deep: #0B0C10;
      --bg-block: #1F2833;
      --primary-purple: #A239EA;
      --accent-green: #45E3A0;
      --text-primary: #E0E0E0;
      --text-secondary: #9CA3AF;
      --card-bg: rgba(255, 255, 255, 0.03);
      --card-border: rgba(255, 255, 255, 0.06);
      --glass-blur: blur(12px);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --shadow-glow: 0 12px 40px rgba(162, 57, 234, 0.15);
      --border-radius-lg: 16px;
      --border-radius-sm: 12px;
      --font-mono: 'Inter', 'SF Mono', 'Courier New', monospace;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
    }

    * {
      box-sizing: border-box;
    }

    body {
      background-color: var(--bg-deep);
      color: var(--text-primary);
      font-family: var(--font-sans);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
      background-image: radial-gradient(circle at 85% 15%, rgba(162, 57, 234, 0.08) 0%, transparent 45%),
                        radial-gradient(circle at 15% 80%, rgba(69, 227, 160, 0.06) 0%, transparent 50%),
                        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.75" numOctaves="1" stitchTiles="stitch"/></filter><rect width="100" height="100" filter="url(/%23noise)" opacity="0.03"/></svg>');
    }

    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    h1 {
      font-size: 3.5rem;
      line-height: 1.2;
    }

    h2 {
      font-size: 2.5rem;
      margin-bottom: 1.5rem;
      color: white;
    }

    h3 {
      font-size: 1.5rem;
      font-weight: 600;
    }

    .text-mono {
      font-family: var(--font-mono);
      font-weight: 600;
    }

    .text-purple {
      color: var(--primary-purple);
    }

    .text-green {
      color: var(--accent-green);
    }

    .text-secondary {
      color: var(--text-secondary);
    }

    .section-padding {
      padding: 100px 0;
    }

    .container-custom {
      max-width: 1140px;
      margin: 0 auto;
      padding: 0 40px;
    }

    /* 导航栏杂志双行结构 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1050;
      background: rgba(11, 12, 16, 0.75);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      transition: var(--transition-smooth);
    }

    .brand-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }

    .logo-text {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    .logo-text .stake-part {
      color: var(--primary-purple);
    }
    .logo-text .taljj-part {
      color: var(--text-secondary);
      font-weight: 400;
      margin-left: 4px;
      font-size: 1.2rem;
    }

    .icon-group i {
      color: var(--text-secondary);
      margin-left: 18px;
      font-size: 1.2rem;
      transition: color 0.2s;
    }
    .icon-group i:hover {
      color: var(--accent-green);
    }

    .channel-row {
      display: flex;
      align-items: center;
      gap: 2rem;
      padding: 8px 0 10px;
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .channel-row::-webkit-scrollbar {
      display: none;
    }

    .channel-link {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      padding-bottom: 6px;
      border-bottom: 2px solid transparent;
      transition: color 0.2s, border-color 0.2s;
      position: relative;
    }
    .channel-link:hover {
      color: var(--accent-green);
    }
    .channel-link.active {
      color: white;
      border-bottom-color: var(--primary-purple);
    }

    /* 卡片通用 */
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: var(--glass-blur);
      -webkit-backdrop-filter: var(--glass-blur);
      border: 1px solid var(--card-border);
      border-radius: var(--border-radius-lg);
      box-shadow: var(--shadow-card);
      padding: 28px;
      transition: var(--transition-smooth);
      height: 100%;
    }
    .glass-card:hover {
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
      border-color: rgba(162, 57, 234, 0.25);
    }

    /* 按钮 */
    .btn-primary-custom {
      background: var(--primary-purple);
      border: none;
      color: white;
      font-weight: 600;
      padding: 14px 32px;
      border-radius: 50px;
      box-shadow: 0 0 20px rgba(162, 57, 234, 0.5);
      transition: var(--transition-smooth);
      display: inline-block;
      text-align: center;
    }
    .btn-primary-custom:hover {
      background: #B84DFF;
      box-shadow: 0 0 30px rgba(162, 57, 234, 0.8);
      transform: scale(1.05);
      color: white;
    }
    .btn-outline-purple {
      background: transparent;
      border: 1.5px solid var(--primary-purple);
      color: var(--primary-purple);
      font-weight: 600;
      padding: 12px 28px;
      border-radius: 50px;
      transition: var(--transition-smooth);
    }
    .btn-outline-purple:hover {
      background: rgba(162, 57, 234, 0.1);
      color: white;
      border-color: #B84DFF;
    }

    /* Hero 数据卡片 */
    .data-mini-card {
      background: rgba(255, 255, 255, 0.05);
      backdrop-filter: blur(8px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 14px;
      padding: 16px 20px;
      margin-bottom: 16px;
    }
    .data-number {
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 700;
    }

    /* 指标看板卡片 */
    .kpi-card {
      background: rgba(255, 255, 255, 0.04);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.05);
      border-radius: 20px;
      padding: 24px;
    }
    .trend-bar {
      display: flex;
      align-items: flex-end;
      gap: 6px;
      height: 40px;
      margin-top: 16px;
    }
    .trend-bar span {
      width: 6px;
      background: var(--primary-purple);
      border-radius: 3px;
      height: calc(10% + 20px);
    }
    .trend-bar span:nth-child(odd) { background: var(--accent-green); opacity: 0.8; }

    /* 对比区 */
    .compare-card-left {
      border: 1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.02);
    }
    .compare-card-right {
      border: 1px solid rgba(69,227,160,0.25);
      background: rgba(69,227,160,0.03);
      box-shadow: 0 0 18px rgba(69,227,160,0.1);
    }
    .vs-badge {
      background: var(--primary-purple);
      color: white;
      border-radius: 50%;
      width: 48px;
      height: 48px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      box-shadow: 0 0 24px var(--primary-purple);
    }

    /* FAQ */
    .accordion-button {
      background: rgba(255,255,255,0.03);
      color: var(--text-primary);
      font-weight: 600;
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: 14px !important;
      padding: 20px 24px;
    }
    .accordion-button:not(.collapsed) {
      background: rgba(162,57,234,0.08);
      color: white;
      border-color: var(--primary-purple);
      box-shadow: none;
    }
    .accordion-button::after {
      filter: brightness(0) invert(0.7);
    }

    /* 表单 */
    .form-glow {
      background: rgba(255,255,255,0.03);
      backdrop-filter: blur(16px);
      border: 1px solid transparent;
      background-clip: padding-box;
      position: relative;
      border-radius: 24px;
      padding: 40px;
      box-shadow: 0 0 28px rgba(162,57,234,0.25);
    }
    .form-glow::before {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: 24px;
      padding: 1px;
      background: linear-gradient(135deg, var(--primary-purple), var(--accent-green));
      mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: xor;
      mask-composite: exclude;
      pointer-events: none;
    }
    .form-control-dark {
      background: rgba(0,0,0,0.3);
      border: none;
      border-bottom: 1px solid rgba(255,255,255,0.2);
      border-radius: 4px 4px 0 0;
      color: white;
      padding: 12px 16px;
    }
    .form-control-dark:focus {
      background: rgba(0,0,0,0.5);
      border-bottom-color: var(--accent-green);
      box-shadow: 0 4px 8px rgba(69,227,160,0.2);
      color: white;
    }

    footer a {
      color: var(--text-secondary);
      text-decoration: none;
    }
    footer a:hover {
      color: var(--accent-green);
    }

    @media (max-width: 768px) {
      h1 { font-size: 2.8rem; }
      h2 { font-size: 2rem; }
      .container-custom { padding: 0 20px; }
      .section-padding { padding: 70px 0; }
      .channel-row { gap: 1.5rem; }
      .brand-row { padding: 10px 0; }
    }